Creative CommonsLab-grown diamonds are increasing in popularity. In 2018, just 3.5% of the gem trade by value was artificial — in 2023, it was 18.5%, and should exceed 20% this year, an analyst told AFP. Diamonds are pure crystalline carbon, formed by the incredible heat and pressure of the deep earth. Those conditions can be recreated in laboratories, dropping “seed” crystals into reactors. The technology has existed since the 1950s but a viable process for producing natural-quality gems is just 10 years old: India is the hub of the new industry. The lab-grown gems may not be a billion years old like their natural counterparts, but they are much cheaper, chemically identical, and guaranteed not to be from a conflict zone. |